Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Antibodies are examples of which protein category?

Antibodies are defensive proteins produced by B cells that patrol the blood and tissues to recognize and neutralize foreign invaders. Their highly specific binding to antigens on pathogens or toxins marks them for destruction or helps neutralize their effects, which is the hallmark of the immune defense role. They don’t catalyze chemical reactions like enzymes, they don’t act as signaling hormones, and they don’t function as receptors that pass signals into cells. Instead, their main job is protection—binding and tagging invaders to coordinate their removal.

Antibodies are defensive proteins produced by B cells that patrol the blood and tissues to recognize and neutralize foreign invaders. Their highly specific binding to antigens on pathogens or toxins marks them for destruction or helps neutralize their effects, which is the hallmark of the immune defense role. They don’t catalyze chemical reactions like enzymes, they don’t act as signaling hormones, and they don’t function as receptors that pass signals into cells. Instead, their main job is protection—binding and tagging invaders to coordinate their removal.